Due Date Calculator
Enter Your Pregnancy Information
Calculating your due date and pregnancy timeline...
Pregnancy Timeline
Advanced Features & Information
Pregnancy Calendar
View your week-by-week pregnancy calendar with key milestones and development stages.
Milestone Notifications
Get reminders for important prenatal appointments, tests, and baby development milestones.
Share Results
Share your due date and pregnancy timeline with family, friends, or your healthcare provider.
How to Calculate Your Pregnancy Due Date: A Comprehensive Guide
Calculating your estimated due date (EDD) is one of the first exciting steps in your pregnancy journey. Our Pregnancy Due Date Calculator uses medical standards to provide accurate, real-time results that help you plan for your baby's arrival.
Understanding Due Date Calculation
Most healthcare providers use Naegele's Rule to estimate due dates. This standard calculation adds 280 days (40 weeks) to the first day of your last menstrual period (LMP). This method assumes a regular 28-day menstrual cycle with ovulation occurring on day 14.
How to Use This Pregnancy Calculator
- Enter your last menstrual period (LMP) date: This is the first day of your last period before pregnancy.
- Adjust your cycle length if needed: If your menstrual cycles are longer or shorter than 28 days, adjust the cycle length for more accurate results.
- Review your results: Get your estimated due date, current gestational age, trimester, and conception date instantly.
- Explore advanced features: Use the pregnancy calendar, milestone tracker, and share functionality for comprehensive pregnancy planning.
Why Due Dates Are Estimates
Only about 5% of babies are born on their exact due date. Most births occur between 37 and 42 weeks of pregnancy. Your due date is an estimate that helps healthcare providers monitor fetal development and schedule important prenatal tests.
Factors That Can Affect Your Due Date
- Irregular menstrual cycles
- Variations in ovulation timing
- Ultrasound measurements in early pregnancy
- IVF or fertility treatment conception dates
Note: This pregnancy due date calculator provides estimates based on standard medical calculations. Always consult with your healthcare provider for personalized medical advice and confirm your due date through clinical assessment.